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transform _NET_WM_ICON data to correct depth

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This commit is contained in:
Mathias Gumz 2008-03-05 09:24:40 +01:00
parent 73848440ce
commit 1b1262e01b
1 changed files with 38 additions and 11 deletions
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49
src/Ewmh.cc
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@ -75,7 +75,8 @@ namespace {
* This is an array of 32bit packed CARDINAL ARGB with high byte being A, low
* byte being B. The first two cardinals are width, height. Data is in rows,
* left to right and top to bottom.
*/
*
* TODO: maybe move the pixmap-creation code to FbTk? */
void extractNetWmIcon(Atom net_wm_icon, WinClient& winclient) {
typedef std::pair<int, int> Size;
@ -160,7 +161,8 @@ void extractNetWmIcon(Atom net_wm_icon, WinClient& winclient) {
const unsigned long* src = icon_data.begin()->second;
unsigned int pixel;
unsigned int rgba;
unsigned long pixel;
int x;
int y;
unsigned char r, g, b, a;
@ -168,15 +170,40 @@ void extractNetWmIcon(Atom net_wm_icon, WinClient& winclient) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++, src++) {
pixel = *src; // use only 32bit
rgba = *src; // use only 32bit
a = ( pixel & 0xff000000 ) >> 24;
r = ( pixel & 0x00ff0000 ) >> 16;
g = ( pixel & 0x0000ff00 ) >> 8;
b = ( pixel & 0x000000ff );
a = ( rgba & 0xff000000 ) >> 24;
r = ( rgba & 0x00ff0000 ) >> 16;
g = ( rgba & 0x0000ff00 ) >> 8;
b = ( rgba & 0x000000ff );
// transfer color data
XPutPixel(img_pm, x, y, pixel & 0x00ffffff ); // TODO: this only works in 24bit depth
// 15 bit display, 5R 5G 5B
if (img_pm->red_mask == 0x7c00
&& img_pm->green_mask == 0x03e0
&& img_pm->blue_mask == 0x1f) {
pixel = ((r << 7) & 0x7c00) | ((g << 2) & 0x03e0) | ((b >> 3) & 0x001f);
// 16 bit display, 5R 6G 5B
} else if (img_pm->red_mask == 0xf800
&& img_pm->green_mask == 0x07e0
&& img_pm->blue_mask == 0x1f) {
pixel = ((r << 8) & 0xf800) | ((g << 3) & 0x07e0) | ((b >> 3) & 0x001f);
// 24/32 bit display, 8R 8G 8B
} else if (img_pm->red_mask == 0xff0000
&& img_pm->green_mask == 0xff00
&& img_pm->blue_mask == 0xff) {
pixel = rgba & 0x00ffffff;
} else {
pixel = 0;
}
// transfer rgb data
XPutPixel(img_pm, x, y, pixel);
// transfer mask data
XPutPixel(img_mask, x, y, a > 127 ? 0 : 1);
@ -194,8 +221,8 @@ void extractNetWmIcon(Atom net_wm_icon, WinClient& winclient) {
XPutImage(dpy, icon.pixmap().drawable(), gc_pm.gc(), img_pm, 0, 0, 0, 0, width, height);
XPutImage(dpy, icon.mask().drawable(), gc_mask.gc(), img_mask, 0, 0, 0, 0, width, height);
XDestroyImage(img_pm); // also frees img_pm->data
XDestroyImage(img_mask); // also frees img_mask->data
XDestroyImage(img_pm); // frees img_pm->data as well
XDestroyImage(img_mask); // frees img_mask->data as well
XFree(raw_data);